Home / 714,160.32-985,538.50-391,875.81

Finding the Fourth Proportional to 714,160.32, 985,538.50 and 391,875.81

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Solution

The fourth proportional to 714,160.32, 985,538.50 and 391,875.81 is: 540,787.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    714,160.32 : 985,538.50 = 391,875.81 : x
  2. Step 2: Convert to fraction form
    714,160.32/985,538.50 = 391,875.81/x
  3. Step 3: Cross multiply
    714,160.32x = 985,538.50 × 391,875.81
  4. Step 4: Simplify right side
    714,160.32x = 386,208,697,973.69
  5. Step 5: Solve for x
    x = 386,208,697,973.69/714,160.32
  6. Step 6: Final answer
    x = 540,787.11

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.